My research interest is structural optimization. I have enhanced the general optimality criteria method by Venkayya, Berke, and Khot. My students have employed it in several research works. It works excellently. I have further used the optimization algorithms in nonlinear analysis. Our algorithm works many times faster than other nonlinear analysis techniques and yet is more accurate than others. Another field of my research is steel shear walls. I have suggested semi-rigid steel shear walls and provided a basis for its analysis and design in its limit state. Several design charts have been produced to help engineers design semi-rigid steel shear walls easily. I have published a book (in Persian) in this field.